Windy.com Temps | Gusts | WU KORD KPWK

CLICK for this month's BIG night sky ...

RADAR FULL MAP SCREEN

NEXRAD

STORMTRACK

Cardinal SAT

CHGOWX.COM



MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).

Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

ARLINGTON HEIGHTS WEATHER

Thursday, February 22, 2024

SPC Feb 22, 2024 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1115 PM CST Wed Feb 21 2024

Valid 221200Z - 231200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are expected across the Mid-South to the Lower Ohio
and Tennessee Valleys today and tonight. A couple of strong storms
may produce gusty winds or small hail, but overall severe potential
appears low.

...Synopsis and Discussion...

Initially quasi-zonal flow over the southern tier of the U.S. will
become more amplified today/tonight as an upper trough over Canada
digs southward near/east of the MS River. Shortwave impulses over
the Ozark Plateau and OH Valley early this morning will support
ongoing showers and thunderstorms over the Mid-MS/OH Valley vicinity
early in the day. At the surface, an elongated area of low pressure
will extend from the ArkLaTex vicinity to the Lower OH Valley by
midday while a cold front shifts southeast with time. Southerly
low-level flow ahead of the front will allow for minor increases in
boundary-layer moisture, mainly across the Mid-South/TN Valley area
through the afternoon/evening. Increasing large-scale and frontal
forcing will support additional thunderstorm development from AR
into western TN by early/mid-afternoon, shifting southeast toward
northern MS and the TN Valley this evening into tonight.

Limited boundary-layer moisture with northward extent across the
Ohio Valley will temper the severe risk, though a couple of strong
storms could produce gusty winds or small hail during through
midday. Further south across AR/TN into MS/AL, MLCAPE will be
tempered somewhat by pockets of drier air aloft (as noted in
RAP/HRRR forecast soundings). Nevertheless, vertical shear will be
somewhat favorable for at least briefly organized storm structures
as initial cells become more linear with time/southeast extent under
the influence of the advancing cold front during the
afternoon/evening. Gusty winds may accompany this activity, but
severe potential is expected to remain low.

..Leitman.. 02/22/2024


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/T357Js
SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)